Title:
【発明の名称】ラン・レングス及び接続コンポーネント解析による2調性イメージ非テキスト情報除去
Document Type and Number:
Japanese Patent JPH05502744
Kind Code:
A
Abstract:
In processing a text image prior to optical character recognition processing, non-text graphical material is removed from the image by first discarding all lines in accordance with the length of the line and/or the percentage of black pixels in the entire pixel row (or column) in which the line is located. The line length and black pixel percentage are parameters which are traded off against one another on a sliding scale. Then, the remaining objects in the image are processed in a two-step process in which: (a) objects whose size is above a maximum threshold or below a minimum threshold are discarded and (b) individual sub-objects comprised within any of the discarded objects whose individual area and height are within threshold percentages of the median area and height of all objects in the image are restored to the image.
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Inventors:
Beatu, Louis James
Application Number:
JP50111590A
Publication Date:
May 13, 1993
Filing Date:
November 30, 1990
Export Citation:
Assignee:
Eastman Kodak Company
International Classes:
G06T5/00; G06T7/60; G06V30/10; (IPC1-7): G06F15/70; G06K9/20
Attorney, Agent or Firm:
Kyozo Yuasa (5 people outside)